A reproduction device is configured to receive light emitted based on a plurality of signals having a specific amplitude in a specific color space on which information is superimposed, and to reproduce the information based on the received light. The reproduction device includes: a memory; and a processor coupled to the memory and configured to: generate a plurality of signals in the specific color space from the received light, correct the generated plurality of signals based on the specific amplitude, and acquire the information based on the corrected plurality of signals.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A reproduction device configured to receive light emitted based on a plurality of signals having a specific amplitude in accordance with a specific color space on which information is superimposed, respectively, and to reproduce the information based on the received light, the reproduction device comprising: a memory; and a processor coupled to the memory and configured to: generate each of the plurality of signals in the specific color space from the received light, the plurality of signals having the specific amplitude and a preamble which is a predetermined specific reference signal, correct the generated plurality of signals based on the specific amplitude and a matrix to be obtained based on a comparison between the preamble and the specific reference signal, and acquire the information based on the corrected plurality of signals.
2. The reproduction device according to claim 1 , wherein the processor is configured to correct amplitudes of the generated plurality of signals according to a specific ratio in a case where each of amplitudes of the generated plurality of signals is determined by combining a plurality of color components in the specific color space at the specific ratio according to the specific amplitude.
3. The reproduction device according to claim 1 , further comprising: a camera configured to image the object by the received light, wherein the processor is configured to correct the plurality of signals generated from the received light received in association with imaging of the object by the camera.
4. The reproduction device according to claim 3 , wherein the processor is configured to: divide an image which is obtained by imaging the object into a plurality of regions, and assign a weight to the plurality of regions according to a predetermined degree of similarity with respect to the spectral distribution of the emitted light, in which the spectral distribution is predetermined, of each received light for each of the plurality of regions.
5. The reproduction device according to claim 1 , wherein the received light includes a reflected light in a case where the object having the specific spectral reflectivity is irradiated with the emitted light.
6. The reproduction device according to claim 1 , wherein the information which is acquired is information associated with the object having the specific spectral reflectivity in which the emitted light is radiated, and the reproduction device includes a display device configured to display the specified information by the information associated with the object.
7. The reproduction device according to claim 1 , wherein the information which is acquired is information associated with the object having the specific spectral reflectivity in which the emitted light is radiated, and the reproduction device includes a projector configured to project the information specified by the information associated with the object.
8. The reproduction device according to claim 1 , wherein the information is superimposed on the plurality of signals by modulating phases of the plurality of signals having the specific amplitude.
9. The reproduction device according to claim 1 , wherein the received light includes a plurality of color components generated by performing specific conversion on the plurality of signal on which the information is superimposed.
10. A reproduction device configured to receive light emitted based on a plurality of signals in accordance with a specific color space on which information is superimposed, respectively, and to reproduce the information based on the received light, the reproduction device comprising: a memory; and a processor coupled to the memory and configured to: estimate each of a spectral reflectivity of an object that reflects the emitted light by comparing a spectral distribution of the received light and a known spectral distribution, correct the received light based on the estimated spectral reflectivity of the object, and acquire the information based on the corrected amplitudes of the received light.
11. The reproduction device according to claim 10 , wherein the processor is configured to: generate a plurality of signals in the specific color space from the received light, and correct the received light by correcting the generated plurality of signals based on the estimated spectral reflectivity of the object.
12. The reproduction device according to claim 10 , wherein the processor is configured to: correct the received light by correcting each component in a case where the received light is represented by the other color space based on the estimated spectral reflectivity of the object, generate a plurality of signals in the specific color space from each of the corrected components, and acquire the information based on the generated plurality of signals.
13. The reproduction device according to claim 11 , wherein the processor is configured to compare the spectral distribution of the received light and the known spectral distribution by comparing each component in the other color space in a case where the known spectral distribution is represented by the other color space and each component in the other color space in a case where the received light is represented by the other color space and estimates the spectral reflectivity of the object.
14. The reproduction device according to claim 11 , wherein the processor is configured to estimate a reflectivity coefficient of each of the components in the other color space as the spectral reflectivity of the object by comparing an average value of the spectral distributions in a specific period in the received light and the spectral distribution of the emitted light in which the spectral distribution is predetermined.
15. The reproduction device according to claim 14 , wherein the processor is configured to correct the generated plurality of signals based on a reciprocal of the estimated reflectivity coefficient or an inverse ratio of the estimated reflectivity coefficient.
16. The reproduction device according to claim 14 , wherein the processor is configured to correct each component in a case where the received light is represented by the other color space based on a reciprocal of the estimated reflectivity coefficient or an inverse ratio of the estimated reflectivity coefficient.
17. A method of receiving light emitted based on a plurality of signals having a specific amplitude in accordance with a specific color space on which information is superimposed, respectively, and reproducing the information based on the received light, the method comprising: generating each of the plurality of signals in the specific color space from the received light, the plurality of signals having the specific amplitude and a preamble having a predetermined specific reference signal; correcting, by a processor, the generated plurality of signals based on the specific amplitude and a matrix to be obtained based on a comparison between the preamble and the specific reference signal; and acquiring the information based on the corrected plurality of signals.
18. A non-transitory storage medium for storing a program that causes a computer to execute a process, the computer being configured to receive light emitted based on a plurality of signals having a specific amplitude in accordance with a specific color space on which information is superimposed, respectively, and to reproduce the information based on the received light, the process comprising: generating each of the plurality of signals in the specific color space from the received light; correcting the generated plurality of signals based on the specific amplitude and a matrix to be obtained based on a comparison between the preamble and the specific reference signal; and acquiring the information based on the corrected plurality of signals.
19. A system comprising: a light device including a light source configured to emit light based on a plurality of signals having a specific amplitude in accordance with a specific color space, information being superimposed on the plurality of signals, respectively; a reproduction device including: a receiver configured to receive the emitted light; and a processor coupled to the receiver and configured to: generate each of the plurality of signals in the specific color space from the received light, the plurality of signals having the specific amplitude and a preamble having a predetermined specific reference signal, correct the generated plurality of signals based on the specific amplitude and a matrix to be obtained based on a comparison between the preamble and the specific reference signal, and acquire the information based on the corrected plurality of signals; and a device configured to provide relevant information according to the acquired information.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 17, 2017
September 11, 2018
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